CN108916100B - Rack server and fan control system - Google Patents
Rack server and fan control system Download PDFInfo
- Publication number
- CN108916100B CN108916100B CN201810796629.XA CN201810796629A CN108916100B CN 108916100 B CN108916100 B CN 108916100B CN 201810796629 A CN201810796629 A CN 201810796629A CN 108916100 B CN108916100 B CN 108916100B
- Authority
- CN
- China
- Prior art keywords
- power supply
- fan
- switch module
- controller
- rack server
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a rack server and a fan control system, which comprise a controller; the anti-hang circuit is connected with the controller; the switch module is connected with the system power supply at a first end and connected with a power supply end of the fan at a second end; and the delay module is respectively connected with the system power supply and the control end of the switch module and is used for controlling the switch module to be switched off in a preset time period when the system power supply starts to supply power, controlling the switch module to be switched on after the preset time period, and controlling the difference between the preset time period and the initialization time of the controller to be a preset value. The system power supply for supplying power to the fan is controlled by the switch module to stop supplying power to the fan at the initialization stage of the controller, and the system power supply is controlled to supply power to the fan only after the preset time period, so that the controller or the anti-locking circuit controls the fan to rotate to dissipate heat, noise generated by the anti-locking circuit controlling the fan to rotate at full speed in the preset time period is eliminated, and influence of the noise on operators beside the rack server is eliminated.
Description
Technical Field
The invention relates to the technical field of server heat dissipation, in particular to a rack server and a fan control system.
Background
With the rapid development of cloud services, low-cost, high-maintainability, large-scale, high-density rack servers gradually begin to occupy the cloud server market. The rack server is provided with a fan used for dissipating heat during operation of the rack server, and is further provided with a fan control system used for controlling the fan, wherein the fan control system comprises a controller and an anti-hang circuit, under a normal state, the controller controls the rotating speed of the fan, and the fan can not be controlled to rotate at full speed generally during control (under a normal condition, the heat dissipation requirement of the rack server can be met even if the fan rotates at non-full speed), and at the fault or initialization stage of the controller, the anti-hang circuit can control the fan at full speed. However, in the initialization stage of the controller, most of the components in the rack server are still in the initialization stage and have not yet entered into a normal working state, and at this time, the anti-hang circuit controls the fan to rotate at full speed, which may generate very large noise, and affect the experience of the operator beside the rack server.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a rack server and a fan control system, which eliminate noise generated by a dead-end prevention circuit controlling a fan to rotate at full speed in a preset time period and eliminate the influence of the noise on operators beside the rack server.
In order to solve the above technical problem, the present invention provides a fan control system of a rack server, including:
a controller connected to a system power supply;
the anti-hang circuit is respectively connected with the system power supply and the controller;
the first end of the switch module is connected with the system power supply, and the second end of the switch module is connected with the power supply end of the fan; and the delay module is respectively connected with the system power supply and the control end of the switch module and is used for controlling the switch module to be switched off in a preset time period when the system power supply starts to supply power, controlling the switch module to be switched on after the preset time period, and the difference between the preset time period and the initialization time of the controller is a preset value.
Preferably, the delay module comprises a capacitor and a resistor, wherein:
the first end of the capacitor is connected with the system power supply and the first end of the resistor respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the control end of the switch module.
Preferably, the delay module includes a processor, configured to control the switch module to be turned off within a preset time period when the system power supply starts to supply power, and control the switch module to be turned on after the preset time period.
Preferably, the switch module includes N parallel MOS transistor strings, each of the MOS transistor strings includes M series MOS transistors, and N, M is a positive integer.
Preferably, the MOS transistor string is an NMOS transistor string or a PMOS transistor string.
Preferably, the method further comprises the following steps:
and the alarm module is connected with the anti-hang circuit and is used for giving an alarm when the anti-hang circuit controls the fan to rotate.
Preferably, the alarm module is a sound alarm module and/or a display alarm module.
Preferably, the controller is a baseboard management controller BMC.
Preferably, the preset value is 0.
In order to solve the technical problem, the invention further provides a rack server, which comprises a system power supply, a fan and the fan control system.
According to the method, in the initialization stage of the controller, most of devices in the rack server are still in the initialization stage, and do not enter a normal working state, at the moment, the heat emitted by all the devices in the rack server is little, and heat dissipation is almost not needed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fan control system of a rack server according to the present invention.
Detailed Description
The core of the invention is to provide a rack server and a fan control system, which eliminate the noise generated by the anti-hang circuit controlling the full-speed rotation of the fan within the preset time period and eliminate the influence of the noise on the operators beside the rack server.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a fan control system of a rack server provided in the present invention, the system includes:
a controller 1 connected to a system power supply;
an anti-hang up circuit 2 connected with the system power supply and the controller 1 respectively;
the switch module 3 is connected with a system power supply at a first end and connected with a power supply end of the fan at a second end;
and the delay module 4 is respectively connected with the system power supply and the control end of the switch module 3, and is used for controlling the switch module 3 to be switched off in a preset time period when the system power supply starts to supply power, and controlling the switch module 3 to be switched on after the preset time period, wherein the difference between the preset time period and the initialization time of the controller 1 is a preset value.
Specifically, the working principle of the controller 1 and the anti-hang circuit 2 in the fan control system is as follows: after a system power supply is powered on, the controller 1 is initialized, and the anti-hang circuit 2 is a hardware circuit and does not need to be initialized, so that the anti-hang circuit 2 immediately outputs a Pulse Width Modulation (PWM) signal for controlling the full-speed rotation of the fan when not detecting the PWM signal output by the controller 1, after the initialization of the controller 1 is completed, the controller 1 outputs the PWM signal, and the anti-hang circuit 2 transmits the PWM signal output by the controller 1 to the fan after detecting that the PWM signal is output by the controller 1. In this process, the system power supply in the prior art is always connected to the power terminal of the fan, so that how the fan rotates becomes directly controlled by the PWM signal output from the controller 1 or the anti-hang circuit 2.
In the application, in the initial power-on stage of the system power supply of the rack server, not only the controller 1, but also most of devices and modules in the rack server need to be initialized, that is, most of the devices are not in a normal working state yet in the initial power-on stage, so that the heat dissipation capacity of the rack server is small, and almost no heat dissipation is needed. Based on this, the present application starts from the power supply of one of the requirements for the rotation of the fan (the other requirement is the PWM signal), so that the system power supply is controlled to stop supplying power to the fan at the initialization stage of the controller 1, and the system power supply is controlled to start supplying power to the fan after the initialization of the controller 1 is completed.
Specifically, the switch module 3 is arranged between the system power supply and the fan and used for realizing the connection or disconnection of the system power supply and the fan, the delay module 4 is also arranged and is respectively connected with the system power supply and the switch module 3 and used for controlling the switch module 3 to be disconnected in a preset time period after the system power supply is detected to be powered on, the difference between the preset time period and the initialization time of the controller 1 is a preset value, the smaller the preset value is, the better the preset value is, and the better the preset value is, the 0 is preferably (at the moment, the controller 1 and the anti-hang circuit 2 realize seamless switching, the heat dissipation of the rack server is not influenced while the noise is reduced), and of course, the specific setting is determined according to the actual. During this time, although the anti-hang up circuit 2 will output the PWM signal to the fan, the fan is still not rotating because the fan has no system power to supply power to it. The delay module 4 controls the switch module 3 to be closed after a preset time period, at this time, the controller 1 has been initialized and starts to output the PWM signal to the fan, and the fan starts to rotate.
In addition, it should be noted that the time required for the initialization phase of the controller 1 here can be known in advance.
Therefore, the fan is controlled not to rotate by stopping supplying power to the fan through the system power supply in the initialization stage of the controller 1, and the fan is controlled to rotate by starting supplying power to the fan through the system power supply after the initialization of the controller 1 is completed, so that the noise generated by the anti-hang circuit 2 controlling the full-speed rotation of the fan in the preset time period is eliminated, and the influence of the noise on operators beside the rack server is eliminated.
On the basis of the above-described embodiment:
as a preferred embodiment, the delay module 4 comprises a capacitor and a resistor, wherein:
the first end of the capacitor is connected with the system power supply and the first end of the resistor respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the control end of the switch module 3.
Specifically, in this embodiment, an RC delay circuit is selected to implement the function of the delay module 4, the delay time is related to the capacitance value of the capacitor, the resistance value of the resistor, the voltage value of the system power supply, and the initial voltage value of the capacitor, and a corresponding device is selected according to the initialization time of the controller 1.
In the working process, after the system power supply is powered on, the system power supply can charge the capacitor, after the conducting voltage of the switch module 3 is charged, the switch module 3 can be controlled to be conducted through the resistor, and when the conducting voltage of the switch module 3 is not reached, the switch module 3 is in the turn-off state.
The delay module 4 provided by the embodiment has a simple structure, and all selected devices are common devices, so that the cost is low.
As a preferred embodiment, the delay module 4 includes a processor for controlling the switch module 3 to be opened during a preset time period when the system power supply starts to supply power, and controlling the switch module 3 to be closed after the preset time period.
Specifically, a timer may be designed in the processor, and configured to start timing when the system power supply is powered on (at this time, the processor is also powered on), within a preset time period, the processor controls the switch module 3 to be turned off, and after the preset time period is reached, the processor controls the switch module 3 to be turned on.
The processor may be a CPU or a CPLD (Complex Programmable Logic Device), and the present application is not particularly limited herein and is determined according to the actual situation.
The delay module 4 provided by this embodiment is implemented by a processor, and the implementation manner is simple.
As a preferred embodiment, the switch module 3 includes N parallel MOS strings, each of which includes M series MOS transistors, N, M being positive integers.
Specifically, the MOS tube string connected in parallel is selected as the switch module 3, so that the switch module is easy to realize, small in size and low in cost. When the output voltage of the system power supply is larger, the value of M is larger, and M MOS tubes connected in series can divide voltage; when the output voltage of the system power supply is small, the N value can be larger, the N MOS tube strings connected in parallel can realize shunting, and therefore the embodiment is applicable to both large power supplies and small power supplies and wide in application range.
In a preferred embodiment, the MOS transistor string is an NMOS transistor string or a PMOS transistor string.
The specific selection of which MOS tube string is not particularly limited, and the selection is determined according to the actual situation. In addition, the switch module 3 may also be other types of controllable switches, and the application is not limited thereto.
As a preferred embodiment, further comprising:
and the alarm module is connected with the anti-hang circuit 2 and is used for giving an alarm when the anti-hang circuit 2 controls the fan to rotate.
Specifically, since the anti-hang circuit 2 is set in the application, when the controller 1 is initialized, the fan is not controlled to rotate, and if the subsequent anti-hang circuit 2 still controls the fan to rotate (after the controller 1 is initialized, the controller 1 should control the fan to rotate, but the anti-hang circuit 2 controls the fan to rotate at this time), it indicates that the controller 1 has a fault, and at this time, the alarm module connected to the anti-hang circuit 2 gives an alarm. In specific implementation, the anti-hang circuit 2 can still output the PWM signal after the preset time period (theoretically, the PWM signal output by the controller 1 is transmitted to the fan) so as to control the alarm module to send out an alarm, thereby facilitating the workers to find the fault in time.
In a preferred embodiment, the alarm module is an audio alarm module and/or a display alarm module.
Specifically, the sound alarm module can be a buzzer or a loudspeaker, the display alarm module can be a display screen, and the type of the sound alarm module, the type of the display alarm module and the type of the selected alarm module are not particularly limited and are determined according to actual conditions.
As a preferred embodiment, the Controller 1 is a BMC (Baseboard Management Controller, Baseboard Management Controller 1).
The BMC has the advantages of low cost, high control accuracy and the like, and of course, the controller 1 may be other types of controllers 1 according to actual conditions.
The invention also provides a rack server which comprises a system power supply, a fan and the fan control system.
For the introduction of the fan control system in the rack server provided by the present invention, please refer to the above embodiments, which are not described herein again.
It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A fan control system for a rack server, comprising:
a controller connected to a system power supply;
the anti-hang circuit is respectively connected with the system power supply and the controller;
the first end of the switch module is connected with the system power supply, and the second end of the switch module is connected with the power supply end of the fan;
and the delay module is respectively connected with the system power supply and the control end of the switch module and is used for controlling the switch module to be switched off in a preset time period when the system power supply starts to supply power, and controlling the switch module to be switched on after the preset time period, wherein the difference between the preset time period and the initialization time of the controller is a preset value, and the preset value is 0.
2. The rack server fan control system of claim 1, wherein the delay module comprises a capacitor and a resistor, wherein:
the first end of the capacitor is connected with the system power supply and the first end of the resistor respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the control end of the switch module.
3. The rack server fan control system of claim 1, wherein the delay module comprises a processor configured to control the switch module to open for a predetermined period of time when the system power supply begins to provide power, and to control the switch module to close after the predetermined period of time.
4. The rack server fan control system of any of claims 1-3, wherein the switch module comprises N parallel strings of MOS transistors, each string of MOS transistors comprising M series MOS transistors, N, M being positive integers.
5. The rack server fan control system of claim 4, wherein the MOS string is an NMOS string or a PMOS string.
6. The rack server fan control system of claim 4, further comprising:
and the alarm module is connected with the anti-hang circuit and is used for giving an alarm when the anti-hang circuit controls the fan to rotate.
7. The rack server fan control system of claim 6, wherein the alarm module is an audible alarm module and/or a display alarm module.
8. The rack server fan control system of claim 4, wherein the controller is a Baseboard Management Controller (BMC).
9. A rack server comprising a system power supply, a fan, and a fan control system according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796629.XA CN108916100B (en) | 2018-07-19 | 2018-07-19 | Rack server and fan control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796629.XA CN108916100B (en) | 2018-07-19 | 2018-07-19 | Rack server and fan control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916100A CN108916100A (en) | 2018-11-30 |
| CN108916100B true CN108916100B (en) | 2021-04-30 |
Family
ID=64416407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810796629.XA Active CN108916100B (en) | 2018-07-19 | 2018-07-19 | Rack server and fan control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916100B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109522A (en) * | 2019-05-10 | 2019-08-09 | 联想(北京)有限公司 | A kind of processing method and electronic equipment |
| CN110109521B (en) * | 2019-05-10 | 2021-08-13 | 联想(北京)有限公司 | Processing method and electronic equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451979C (en) * | 2005-11-25 | 2009-01-14 | 英业达股份有限公司 | Method for decreasing immediate current of boot-strap |
| CN2888745Y (en) * | 2006-05-19 | 2007-04-11 | 奇宏电子(深圳)有限公司 | Time delay soft start circuit of fan |
| CN101876328A (en) * | 2009-10-29 | 2010-11-03 | 浪潮电子信息产业股份有限公司 | Method for reducing start-up noises of server system |
| CN102797691A (en) * | 2011-05-27 | 2012-11-28 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN103138967B (en) * | 2011-11-28 | 2016-02-17 | 英业达科技有限公司 | Server rack system and time delay starting-up method thereof |
| CN103835975B (en) * | 2012-11-21 | 2016-08-03 | 国家电网公司 | Fan control circuitry |
| CN103500004A (en) * | 2013-10-18 | 2014-01-08 | 浪潮电子信息产业股份有限公司 | Method for saving energy in starting process of cloud equipment |
| CN107420336A (en) * | 2017-06-29 | 2017-12-01 | 郑州云海信息技术有限公司 | A kind of high reliability fan control device and method based on server |
-
2018
- 2018-07-19 CN CN201810796629.XA patent/CN108916100B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108916100A (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108916100B (en) | Rack server and fan control system | |
| US9255581B2 (en) | Fan control system and fan control method | |
| CN109356875B (en) | Server fan control method, device and system | |
| JP2588582B2 (en) | Apparatus for generating reset pulse when power supply rises for CMOS type integrated circuit | |
| JP2007149084A (en) | Fan system and its sequential start module, and delay start unit | |
| JP4451431B2 (en) | Fan system and method of applying the brake | |
| US9525367B2 (en) | Fan motor braking apparatus and method of controlling the same | |
| US8757985B2 (en) | Fan control circuit | |
| US8810165B2 (en) | Fan control system | |
| WO2023123900A1 (en) | Power-up time sequence control circuit, and system | |
| WO2022078008A1 (en) | Soft-start protection circuit and circuit protection integrated chip | |
| JP5509135B2 (en) | Electronic equipment | |
| CN111277173A (en) | Motor starting control method and device, electrical equipment and storage medium | |
| JP2001517335A (en) | Reset method and apparatus for microcontroller with bidirectional reset line | |
| KR101822241B1 (en) | System of controlling power | |
| US9901006B2 (en) | Control circuit for fan | |
| US10181684B1 (en) | Power connector | |
| US9882372B2 (en) | Electronic device and power protection method | |
| CN104199752B (en) | Failure recovery circuit and device | |
| CN110531818B (en) | Time sequence control method and circuit | |
| TWI482422B (en) | Fan control system and fan control method | |
| JP2002165155A (en) | Power supply voltage control apparatus | |
| CN111756221B (en) | Method and circuit for inhibiting generation of over-high voltage during starting | |
| CN109861588B (en) | Soft starter trigger circuit | |
| JP3048931B2 (en) | Fan restraint current prevention circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |